I'm sorry. My message just pointed to the document by Roger Peng: http://www.biostat.jhsph.edu/~rpeng/docs/R-debug-tools.pdf
HTH, T. ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
